On occasion, you may need to send and receive messages to a non-descript email address, such as 'info@yourdomian.com'. And, more often than not, multiple people need this capability for one address. Instead of creating it using one of your Google Apps accounts, why not use a Google Group? You can very easily create an external address and allow members of the group to receive and send messages. This can be achieved by associating your Google Mail account with the group. You can also very easily send messages right from the group from the group's address.